Correct Channel Balance Version?

A home owner from Minneapolis, MN says:
The sash balances I have measure 25" long and 1/2" wide -- printed with 2420. I am I correct in matching these to the Series 350 in 25" long with option 2420? Thanks for your help before I order.
User submitted photo of their 2420 channel balances.
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Paul from SWISCO responded:
Yes, it does appear the S350-25 Channel Balance would be a good replacement. One quick note, you measured the length of the channel portion of your balance only, correct?
A home owner from Minneapolis, MN says:
Yes, I measured only the metal portion of the balance.
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Paul from SWISCO responded:
Alright, just wanted to confirm the length.
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